<template>
  <div class="shopcar-container">
    <!-- 商品列表区域 -->
    <div class="goods-list" v-for="(item, index) in goodslist" :key="item.id">
      <div class="mui-card">
        <div class="mui-card-content">
          <div class="mui-card-content-inner">
            <mt-switch 
            @change="selectedChanged(item.id,$store.getters.getGoodsSelected[item.id])"
            v-model="$store.getters.getGoodsSelected[item.id]"></mt-switch>
            <img :src="item.thumb_path" alt="" />
            <div class="info">
              <h1>{{ item.title }}</h1>
              <p>
                <span class="price">￥{{ item.sell_price }}</span>
                <numbox
                  :initcount="$store.getters.getGoodsCount[item.id]"
                  :goodsid="item.id"
                ></numbox>
                <!--问题： 如何获取购物车中的商品数量  -->
                <!--1. 可以创建一个空对象， 然后循环购物车中所有商品的数据，把 当前循环这条商品的id，作为对象的属性名，count作为对象的属性值，这样，把数据循环一遍后，就会得到一个对象：{88： 2， 89： 3； 90:1}  -->
                <a href="#" @click.prevent="remove(item.id, index)">删除</a>
              </p>
            </div>
          </div>
        </div>
      </div>
    </div>
    <!-- 结算区域 -->
    <div class="mui-card">
      <div class="mui-card-content">
        <div class="mui-card-content-inner jiesuan">
          <div class="left">
            <p>总计(不含运费)</p>
            <p>已勾选商品 <span class="red">{{$store.getters.getGoodsCountAndAmount['count']}}</span> 件，总价 ￥<span class="red">{{$store.getters.getGoodsCountAndAmount['amount']}}</span></p>
          </div>
          <mt-button type="danger">去结算</mt-button>
        </div>
      </div>
    </div>
    <!-- {{ $store.getters.getGoodsSelected }} -->
  </div>
</template>

<script>
import numbox from "../subcomponents/shopcar_numbox.vue";
export default {
  data() {
    return {
      goodslist: []
    };
  },
  created() {
    this.getGoodsList();
  },
  methods: {
    getGoodsList() {
      // 获取store中所有商品的id, 然后拼接出一个用逗号分隔的字符串
      var idArr = [];
      this.$store.state.car.forEach(item => {
        idArr.push(item.id);
      });

      if (idArr.length <= 0) {
        return;
      }

      this.$http
        .get("api/goods/getshopcarlist/" + idArr.join(","))
        .then(result => {
          if (result.body.status === 0) {
            // console.log(result.body.message)
            this.goodslist = result.body.message;
          }
        });
    },
    remove(id, index) {
      // 点击删除， 把商品 从 store 中根据 id删除，把当前组件中的goodslist ，对应要删除的那个商品，使用index 删除
      this.goodslist.splice(index, 1);
      this.$store.commit("removeFromCar", id);
    },
    selectedChanged(id,value){
      // 每当点击开关，把开关的最新状态保存到本地
      console.log(id,value)
      this.$store.commit('updateGoodsSelected',{id,selected:value})
    }
  },
  components: {
    numbox
  }
};
</script>

<style lang="scss" scoped>
.shopcar-container {
  background-color: #eee;
  overflow: hidden;
  .goods-list {
    .mui-card-content-inner {
      display: flex;
      align-items: center;
    }
    img {
      height: 60px;
      width: 60px;
    }
    h1 {
      font-size: 13px;
    }
    .info {
      .price {
        color: red;
        font-weight: bold;
      }
    }
  }
  .jiesuan {
      display: flex;
      justify-content: space-between;
      align-items: center;
      .red {
        color: red;
        font-weight: bold;
        font-size: 16px;
      }
    }
}
</style>
